CN1997183A - Method for controlling the transfer of signals from a first communication device to a second communication device - Google Patents

Method for controlling the transfer of signals from a first communication device to a second communication device Download PDF

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CN1997183A
CN1997183A CN 200610064019 CN200610064019A CN1997183A CN 1997183 A CN1997183 A CN 1997183A CN 200610064019 CN200610064019 CN 200610064019 CN 200610064019 A CN200610064019 A CN 200610064019A CN 1997183 A CN1997183 A CN 1997183A
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communication device
signal
weighting
mk
weighting vector
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CN 200610064019
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CN1997183B (en
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Y·哈拉
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三菱电机株式会社
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0452Multi-user MIMO systems

Abstract

The invention concerns a device for controlling the transfer of signals by a first communication device (20) to a second communication device (10) through a wireless network (15), the second communication device having at least N antennas, the first communication device having at least M k antennas. The device for controlling the transfer is included in the second communication device and comprises means for determining a weighting vector v k, the weighting vector v k being composed of M k elements, each element of the weighting vector v k being expected to weight the signals transferred by the first communication device through an antenna of the first communication device, means for determining information related to the determined weighting vector v k and means for transferring to the first communication device at least a signal comprising or being modified by the information related to the determined weighting vector v k . The invention concerns also the corresponding method.

Description

控制由第一通信装置到第二通信装置的信号传输的方法 The control method by the first communication device to the second communication signal transmitting device

技术领域 FIELD

本发明一般而言涉及通信系统,特别涉及一种用于通信系统内的多天线传输的方法和装置。 The present invention generally relates to communication systems, particularly to a method and apparatus for multi-antenna transmission within a communication system is provided.

背景技术 Background technique

在无线链路的接收机端和/或发射机端使用多个天线的电信系统被称作多输入多输出系统(进一步称为MIMO系统)。 At the receiver end of a wireless link and / or telecommunications system using multiple antennas at the transmitter it is called Multiple Input Multiple Output systems (further referred to as MIMO systems). MIMO系统与由单天线系统所提供的那些相比,已经显示出提供大的传输容量。 MIMO system as compared with those by the single antenna system is provided, it has been shown to offer large transmission capacity. 特别是MIMO容量的增加与发射或接收天线的数量成线性关系,无论是对于给定的信噪比还是在有利的不相关信道状态下都是最小的。 MIMO capacity is particularly increased with the number of transmit or receive antennas is linear, either for a given signal to noise ratio or under favorable uncorrelated channel conditions are minimal.

为了优化在接收机端和发射机端之间的无线链路的范围和性能,已经为MIMO系统研究了波束成形。 In order to optimize the range and performance of the wireless link between the receiver end and the transmitter end, it has been studied for the MIMO beamforming system. 合并波束成形的多输入多输出(MIMO)天线方案在无线链路的两端都使用天线信号处理来最大化信噪比(SNR)和/或信号与噪声加干扰的比(SNIR),从而改善两个通信装置之间的链路容限。 Multiple input multiple output (MIMO) antenna scheme combined beamforming uses antenna signal processing at both ends of the wireless link to maximize the signal to noise ratio (SNR) and / or signal to noise plus interference ratio (SNIR), thereby improving link margin between two communication devices.

通常,发射机和接收机端的每个都具有多个天线。 Typically, each transmitter and receiver end having a plurality of antennas. 发射机对多个天线中每个的发射使用一个发射加权矢量来将信号发射给第二通信装置,以及发射信号由在接收机处的多个天线接收。 A plurality of transmitters transmit antennas using a transmit weight vector for each of the signals to be transmitted to the second communication device, and transmitting a plurality of signals received by the antennas at the receiver. 接收机自身为在多个天线上的信号回到发射机的传输确定合适的加权矢量。 A signal receiver itself on the plurality of antennas back to the transmitter to determine the appropriate transmission weight vector.

在其中多个移动终端被链接到一个基站的通信系统的情况下,对于移动终端而言,只要它不知道被链接到该基站并且可能干扰它与该基站的通信的其它移动终端,那么有时就难以确定最佳加权矢量。 In the case where a plurality of mobile terminals linked to the communication system a base station, for the mobile terminal, as long as it does not know the base station is linked to it and may interfere with other mobile communication terminals of the base station, it sometimes difficult to determine the optimum weight vector.

此外,当单个移动终端被链接到一个基站时,或者在点对点通信中,该移动终端不知道在该移动终端附近是否有一些别的基站以及与它们链接的移动终端。 Further, when a single mobile terminal is linked to a base station, or in point to point communication, the mobile terminal does not know whether some other base station and mobile terminals linked to them in the vicinity of the mobile terminal. 这种对无线链路上的通信状态的不知道限制了移动终端确定其必须应用于通过它的天线所传输的信号的最佳加权矢量的能力。 This communication state on the radio link does not know the limits which must be applied to the mobile terminal determines the best ability to weight vector signal through its antenna transmission.

发明内容 SUMMARY

因此,本发明的目的是提出允许通信装置确定最佳加权矢量以便执行有效的波束成形的方法、装置和信号。 Accordingly, an object of the present invention is to propose a device allowing the communication to determine the optimal weight vector in order to perform efficient beamforming method, apparatus and signals.

为此,本发明涉及一种用于控制通过无线网络由第一通信装置到第二通信装置的信号的传输的方法,第二通信装置具有至少N个天线,其中N等于或大于2,第一通信装置具有至少Mk个天线,其中Mk等于或大于2。 To this end, the present invention relates to a method for controlling signals transmitted to the second communication device, the second communication device having at least N antennas by the first communication device over the wireless network, where N is equal to or greater than 2, the first communication device having at least Mk antennas where Mk is equal or greater than 2. 该方法包括由第二通信装置执行的以下步骤:-确定加权矢量vk,其中k是表示第一通信装置的标记(indicia),该加权矢量由Mk个元素组成,该加权矢量的每个元素被期望加权由第一通信装置通过第一通信装置的天线所传输的信号,-确定与所确定的加权矢量vk有关的信息,-通过无线网络将至少一个信号传输到第一通信装置,所述信号包括与所确定的加权矢量vk有关的信息或者由与所确定的加权矢量vk有关的信息进行加权。 The method comprises the steps executed by the second communication means: - determining weighting vector VK, where k is a flag indicating (indicia of) the first communication device, the weighting vector of Mk elements, each element of the weighting vector is desired signal weighted by the first communication means transmitted through the antenna of the first communication device, - determining a weighting vector vk and information relating to the determined, - at least one wireless network to the first communication signal transmitting means, said signal It includes information of the determined weighting vector vk or related information by the weighting vector vk determined by the weighting associated.

本发明还涉及一种用于控制通过无线网络由第一通信装置到第二通信装置的信号的传输的装置,第二通信装置具有至少N个天线,其中N等于或大于2,第一通信装置具有至少Mk个天线,其中Mk等于或大于2。 The present invention also relates to a device for controlling the transmission of signals of the second communication device, the second communication device having at least N antennas by the first communication device over the wireless network, where N is equal to or greater than 2, the first communication device having at least Mk antennas where Mk is equal or greater than 2. 用于控制传输的该装置被包含在第二通信装置中,并且包括:-用于确定加权矢量vk的装置,其中k是表示第一通信装置的标记,该加权矢量vk由Mk个元素组成,该加权矢量vk的每个元素被期望加权由第一通信装置通过第一通信装置的天线所传输的信号,-用于确定与所确定的加权矢量vk有关的信息的装置,-用于通过无线网络将至少一个信号传输到第一通信装置的装置,所述信号包括与所确定的加权矢量vk有关的信息或者由与所确定的加权矢量vk有关的信息进行修改。 The means for controlling the transfer is included in the second communication apparatus, and comprising: - means for determining a weighting vector vk, where k is a flag indicating the first communication device, the weighting vector vk composed of Mk elements, each element of the weighting vector vk being expected weighted signal transmitted by the first communication device through the antenna of the first communication device, - means for weighting vector vk and the information related to the determined determination - over a wireless at least one network device transmits a signal to the first communication device, said signal includes information of the determined weighting vector vk or related information modified by the determined weighting vector vk related.

因此,如果第二通信装置知道任何其它可能干扰第一和第二通信装置之间的信息传输的通信装置,则可以考虑到这些干扰来进行加权矢量的确定。 Thus, if the second communication device know of any other communication devices that may interfere with the transmission of information between the first and the second communication device, consider the interference to the determination of the weight vector.

此外,第二通信装置然后可以控制由至少一个第一通信装置对由第一通信装置传输到第二通信装置的信号所进行的加权。 Further, the second communication device may then be controlled by the weighting means to the at least one first communication signal transmitted by the first communication device to the second communication device is performed.

当第一通信装置是移动终端并且第二通信装置是基站时,这样的情况特别有效。 When the first communication device is a mobile terminal and the second communication device is a base station, such a case is particularly effective.

根据特定特征,与所确定的加权矢量vk有关的信息是至少第二加权矢量wk,其中k是表示第一通信装置的标记,第二加权矢量wk由N个元素组成,第二加权矢量wk的每个元素加权通过第二通信装置的每个天线传输到第一通信装置的信号,并且该信号是导频信号。 According to a particular feature, information related to the determined weighting vector vk is at least a second weighting vector wk, where k is a flag indicating the first communication device, the second weighting vector wk of N elements, the second weighting vector wk weighting each element of the signal transmitted to the first communication device through each antenna of the second communication apparatus, and the signal is a pilot signal.

因此,从第二通信装置传输到第一通信装置的信息的数量被降低。 Thus, the number of the second communication device transmits the information from the first communication device is reduced.

根据特定特征,第二加权矢量wk等于wk=b*/‖b‖,其中b=PrHTvk,]]>b*是矢量b的复共轭,Pr是由第一通信装置传输到第二通信装置的信号的功率,以及HT是信道响应矩阵H的转置。 According to a particular feature, the second weighting vector wk is equal to wk = b * / ‖b‖, where b = PrHTvk,]]> b * is the complex conjugate of the vector b, Pr is transmitted to the first communication device by a second communication device power signal, and HT is the channel response matrix H transposition.

因为b=PrHTvk,]]>所以b表示加权矢量vk,该加权矢量vk的每个元素加权由第一通信装置通过第一通信装置的天线所传输的信号。 Since b = PrHTvk,]]> b represents a weight vector vk Therefore, each element signal weighted by the weighting vector vk first communication device transmitted through the antenna of the first communication device. 第二通信装置通过与第一通信装置所使用的类似的加权矢量来加权通过它的天线的每个天线所传输的信号。 Second communication device by a similar weighting vector used by the first communication device to the signal of each antenna of its antennas by weighting the transmission.

根据特定特征,第二通信装置通过无线网络传输多个导频信号,所述导频信号由被定义为相互正交的多个第二加权矢量wk进行加权,以及由不同的第二加权矢量wk所加权的导频信号是相互正交的。 According to a particular feature, the second communication apparatus through a wireless transmission frequency networks a plurality of pilot signals, the pilot signal is by weighting the plurality of second weighting vectors wk are mutually orthogonal is defined by, and a different second weighting vectors wk the weighted pilot signals are orthogonal to each other.

因此,通过所传输的多个导频信号,第二通信装置传输所有允许第一通信装置或若干通信装置从所接收的信号来估计信道响应矩阵和/或确定加权矢量vk的信息。 Thus, by a plurality of guide transmitted pilot signal, the second communication device transmitting all or several communication devices allow the first communication apparatus from the received signal to estimate the channel response matrix and / or information determined weighting vector vk.

根据特定特征,K个第一通信装置被链接到第二通信装置,其中K等于或大于2,所述导频信号相互正交并且由不同的第二加权矢量w1到wK进行加权,以及第二加权矢量wk(对于k=1到K)等于wk=(B*BT)-1bk*/||bk||,]]>其中B=[b1/‖b1‖,…,bK/‖bK‖]不是奇异矩阵,bk=PrHkTvk,]]>Pr是由k个第一通信装置传输到第二通信装置的信号的功率,HTk是与k个第一通信装置有关的信道响应矩阵的转置。 According to a particular feature, K first communication devices are linked one to the second communication device, wherein K is equal to or greater than 2, the pilot signal orthogonal to each other and weighted by different second weighting vectors w1 to wK, and a second weight vector wk (for k = 1 to K) is equal to wk = (B * BT) -1bk * / || bk ||,]]> where B = [b1 / ‖b1‖, ..., bK / ‖bK‖] is not a singular matrix, bk = PrHkTvk,]]> Pr is a k-th first communication device to transmit power of signals second communication device, HTk k is the transpose channel with a first communication device associated response matrix.

因此,第二通信装置可以控制多个第一通信装置,从而然后使本发明能够用于例如空分多址方案。 Thus, the second communication apparatus may control a first plurality of communication devices, so that the present invention can be used then, for example, space division multiple access scheme.

根据特定特征,由所确定的加权矢量wk进行加权的信号被包括在指令时隙中。 According to a particular feature, the signals weighted by the determined weighting vector wk are included in the instruction slot.

根据特定特征,指令时隙进一步包括第一通信标识符和/或将由第一通信装置使用的调制和编码方案。 According to a particular feature, the instruction time slot further comprises the first communication identifier and / or modulation and coding scheme used by the first communication device.

因此,第二通信装置能够将信号传输到给定的第一通信装置,并且以有效的方式控制将由给定的第一通信装置使用的调制和编码方案,例如根据无线网络的条件。 Thus, the second communication device capable of transmitting signals to a given first communication device and control in an efficient manner by the modulation and coding scheme a given first communication device for use, for example, a wireless network conditions.

本发明还涉及一种用于通过无线网络从第一通信装置传输信号到第二通信装置的方法,第二通信装置具有至少N个天线,其中N等于或大于2,第一通信装置具有至少Mk个天线,其中Mk等于或大于2。 The present invention also relates to a second communication device having at least N antennas transmitting signals from a first communication apparatus to a second apparatus through a wireless communication network, wherein N is equal to or greater than 2, the first communication device having at least Mk antennas, where Mk is equal or greater than 2. 该方法包括由第一通信装置执行的以下步骤:-通过Mk个天线从第二通信装置接收至少一个信号,-从所述至少一个接收信号来确定由Mk个元素所组成的加权矢量 The method comprises the steps executed by the first communication device: - receiving at least one signal from a second communication device through the Mk antennas, - determining the weight vector composed of Mk elements of said at least one signal received from -由所确定的加权矢量 - by the determined weighting vector 的元素来加权通过第一通信装置的每个天线传输到第二通信装置的信号。 Weighting the elements of the signal transmitted to the second communication device through each antenna of the first communication device.

本发明还涉及一种用于通过无线网络由第一通信装置传输信号到第二通信装置的装置,第二通信装置具有至少N个天线,其中N等于或大于2,第一通信装置具有至少Mk个天线,其中Mk等于或大于2。 The present invention also relates to a communication device to a second device, the second communication device having at least N antennas signals transmitted by the first communication device over the wireless network, where N is equal to or greater than 2, the first communication device having at least Mk antennas, where Mk is equal or greater than 2. 用于传输信号的该装置被包含在第一通信装置中,并且包括:-用于通过Mk个天线从第二通信装置接收至少一个信号的装置,-用于从所述至少一个接收信号来确定由Mk个元素所组成的加权矢量 The means for transferring signals is included in a first communication device and comprises: - at least one means for receiving a signal from a second communication device through the Mk antennas, - means for receiving a signal from the at least one determined a weight vector composed of Mk elements 的装置,-用于由所确定的加权矢量 , - means for weighting vector is determined by the 的元素来加权通过第一通信装置的每个天线传输到第二通信装置的信号的装置。 The second communication device a signal is transmitted to the weighting element through each antenna of the first communication device.

因此,如果第一通信装置不知道任何其它可能干扰第一和第二通信装置之间的信息传输的通信装置,则仍考虑到这些干扰来进行加权矢量的确定。 Thus, if the first communication device does not know of any other communication devices that may interfere with the transmission of information between the first and the second communication device, the interference is still considered to be determined weighting vector.

此外,通过第一通信装置的加权矢量的确定是简单的。 Further, by determining the weight vector first communication device is simple.

当第一通信装置是移动终端并且第二通信装置是基站时,考虑到移动终端具有比基站更低的信号处理能力,这样的情况是特别有效的。 When the first communication device is a mobile terminal and the second communication device is a base station, the mobile terminal has taken into account, is particularly effective in such a case the base station lower than the signal processing capabilities.

根据特定特征,通过Mk个天线从第二通信装置接收的信号是导频信号。 According to a particular feature, received from the second communication apparatus through the Mk antenna signal is a pilot signal.

根据特定特征,加权矢量 According to a particular feature, the weight vector 等于v~k={(HHH)+a}*||{(HHH)+a}*||,]]>其中+是穆尔-彭罗斯(Moor-Penrose)广义矩阵求逆,a是由第一通信装置接收到的矢量,H是信道响应矩阵,HH是信道响应矩阵H的复共轭转置。 Equal to v ~ k = {(HHH) + a} * || {(HHH) + a} * ||,]]> where + is the Moore - Penrose (Moor-Penrose) generalized matrix inverse, a is the the first communication device receives the vector, H is the channel response matrix, HH is the complex channel response matrix H is a conjugate transpose.

因而加权矢量 Thus the weight vector 的确定是简单的,第一通信装置不需要具有重要的处理能力。 The determination is simple, the first communication device does not need to have important processing capabilities.

根据特定特征,多个信号被接收并且表示p0个符号的序列,以及从与加权矢量有关的信息确定加权矢量 According to a particular feature, the plurality of signals is received and a sequence of p0 symbols, and information related to the determined weighting vector from the weight vector 被分解成:-第一矩阵A~=1p0XSH]]>的计算,X=[x(1),…,x(p0)],x(p)=[x1(p),…,xMk(p)]T是第p个符号的接收矢量信号,S=s1(1).........s1(p0)...............sN(1).........sN(p0),]]>-第二矩阵a~k=1p0XskH]]>的计算,其中sk=[sk(1),…,sk(p0)],-加权矢量v~k={(A~A~H)+a~k}*||{A~A~H)+a~k}||]]>的计算。 Is broken down into: - a first matrix A ~ = 1p0XSH]]> calculation, X = [x (1), ..., x (p0)], x (p) = [x1 (p), ..., xMk (p )] T is the received vector signal of the p-th symbol, S = s1 (1) ......... s1 (p0) ............... sN (1 ) ......... sN (p0),]]> - a second matrix a ~ k = 1p0XskH]]> is calculated, where sk = [sk (1), ..., sk (p0)], - weighting vector v ~ k = {(a ~ a ~ H) + a ~ k} * || ||]]> calculated {a ~ a ~) + a ~ k H}.

因此,第一通信装置不需要知道信道响应矩阵H。 Accordingly, the first communication device does not need to know the channel response matrix H.

根据特定特征,所传输的加权信号是通过Mk个天线从第二通信装置接收的导频符号,并且所传输的加权信号被包含在识别时隙中。 According to a particular feature, the weighted pilot signal is transmitted from the pilot symbols received through the second communication device Mk antennas and the weighted signal is included in the transmitted time slot identification.

根据特定特征,识别时隙进一步包括第一通信装置标识符。 According to a particular feature, the identification time slot further comprises a first communication device identifier.

本发明还涉及一种用于控制通过无线网络由第一通信装置到第二通信装置的信号传输的信号,第二通信装置具有至少N个天线,其中N等于或大于2,第一通信装置具有至少Mk个天线,其中Mk等于或大于2。 The present invention further relates to a method for controlling signals transmitted to the second communication device, the second communication device having at least N antennas by the first communication device over the wireless network, where N is equal to or greater than 2, the first communication device having at least Mk antennas where Mk is equal or greater than 2. 用于控制信号的传输的该信号由第二通信装置传输并且包括导频符号,该导频符号由从加权矢量vk确定的加权矢量wk进行加权,其中k是表示第一通信装置的标记,加权矢量vk由Mk个元素组成,加权矢量vk的每个元素被期望加权由第一通信装置通过第一通信装置的天线所传输的信号。 The signal for transmission of control signals transmitted by the second communication device and comprises pilot symbols, the pilot symbols weighted by a weighting vector wk determined from a weighting vector VK, where k is a flag indicating the first communication device, the weighting a vector vk Mk elements, each element of the weighting vector vk being expected weighted signal transmitted by the first communication device through the antenna of the first communication device.

因为与该信号有关的特征和优点与上面陈述的与根据本发明的方法和装置有关的那些特征和优点相同,所以这里将不对其进行重复。 Because the signal associated with the features and advantages of those features and advantages of the methods and apparatus of the present invention set forth above, according to the same, so there will not be repeated.

根据又一方面,本发明涉及可以被直接装载到可编程装置中的计算机程序,所述计算机程序包括指令或者代码部分,用于当所述计算机程序在可编程装置中被执行时执行根据本发明的方法的步骤。 According to another aspect, the present invention may be directed to a computer program directly loadable into a programmable device, the computer program comprising instructions or code portions for performing when the computer program is executed on a programmable device according to the present invention steps of the method.

因为与该计算机程序有关的特征和优点与上面陈述的与根据本发明的方法和装置有关的那些特征和优点相同,所以这里将不对其进行重复。 Since the features and advantages relating to the computer program with the features and advantages relating to those methods and apparatus of the present invention set forth above, according to the same, so there will not be repeated.

附图说明 BRIEF DESCRIPTION

通过阅读示例实施例的下列描述,本发明的特征将显得更清楚,所述描述是参考附图进行的,其中:图1是根据本发明的表示系统的架构的图;图2是根据本发明的表示基站的架构的图;图3是根据本发明的表示移动终端的架构的图;图4是根据本发明的表示基站的加权矢量确定模块的架构的图;图5是根据本发明的表示移动终端的上行加权矢量确定模块的架构的图;图6是根据本发明的表示上行和下行信道的图;图7a是根据本发明的表示在下行信道中包含的指令时隙的图;图7b是根据本发明的表示在上行信道中包含的识别时隙的图;图8是由基站执行的用于确定移动站的加权矢量以及用于传输与加权矢量有关的信息的算法;图9是由移动终端站执行的用于根据从基站接收的信息来确定加权矢量的算法。 A reading of the following description of exemplary embodiments, features of the invention will appear more clearly described with reference to the accompanying drawings, wherein: FIG. 1 is a diagram of a system architecture of the present invention; FIG. 2 in accordance with the present invention is architecture representing a base station; Figure 3 is according to the present invention showing the architecture of a mobile terminal; Figure 4 is a view of the module of the framework is determined according to the weight vector represents a base station of the present invention; FIG. 5 is a representation of the present invention. the mobile terminal an uplink weighting vector determination module architecture FIG.; FIG. 6 is a diagram of the invention showing uplink and downlink channel; FIG. 7a is a diagram of a downlink channel comprises a slot in the instruction is represented according to the present invention; Figure 7b slot identification is a diagram showing the present invention is contained in an uplink channel; FIG. 8 is a base station for performing a weighting vector determined for the mobile station and a transmission algorithm information relating to the weighting vector; FIG. 9 is a and determining a weighting vector according to the information received from the base station performs the algorithm for the mobile terminal.

具体实施方式 Detailed ways

图1是根据本发明的表示系统的架构的图。 1 is a diagram showing an architecture of the system of the present invention.

在图1的系统中,多个第一通信装置201到20K通过无线网络15被链接到第二通信站10。 In the system of FIG. 1, a plurality of first communication devices 201 to 20K 15 is linked to the second station 10 over a wireless communication network.

优选地并且以非限制性的方式,第一通信装置201到20K是移动终端。 Preferably and in a non-limiting embodiment, the first communication device is a mobile terminal 201 to 20K. 第二通信装置10是基站10。 The second communication device 10 is a base station 10.

基站10具有N个天线,其被标记为BSAnt1到BSAntN。 The base station 10 has N antennas, it is marked as BSAnt1 to BSAntN. 每个移动终端201到20K具有Mk个天线,其被分别标记为MSAnt1到MSAntM以及MSKAnt1到MSKAntM。 Each mobile terminal 201 to 20K has Mk antennas, which are labeled to MSAntM MSAnt1 and MSKAnt1 to MSKAntM. 这里必须注意,Mk个天线的数量可以根据移动终端201到20K而改变。 Here it must be noted that the number of Mk antennas may vary according to the mobile terminal 201 to 20K.

基站10通过下行信道传输信号到移动终端201到20K,以及移动终端201到20K通过上行信道传输信号到基站10。 The base station 10 through the downlink channel transmission signal 201 to 20K, and a mobile terminal via the mobile terminal 201 to 20K uplink channel transmission signal to the base station 10.

当系统使用时分双工方案时,在上行和下行信道中所传输的信号在相同频带的不同时间周期中进行双工。 When the system uses Time Division Duplexing scheme, the signals in the uplink and downlink duplex channel transmitted in different time periods in the same frequency band. 在无线网络15内所传输的信号共享相同的频谱。 Signal is transmitted within a wireless network 15 share the same frequency spectrum. 使用具有固定数量的时隙的重复帧来对该共享谱进行时间划分。 Using repeated frame having a fixed number of time slots to the shared spectrum time division. 每个时隙用于传输仅仅上行或者仅仅下行信号。 Each time slot for transmission of only uplink or downlink signals only.

当系统使用频分双工方案时,在上行和下行信道中所传输的信号在不同的频带中进行双工。 When the system uses Frequency Division Duplexing scheme, the signals in the uplink and downlink duplex channel transmitted in different frequency bands. 频谱被分成不同的频带,并且上行和下行信号被同时传输。 Spectrum is divided into different frequency bands and the uplink and downlink signals are transmitted simultaneously.

基站10通过天线BSAnt1到BSAntN传输将要发送到移动终端201到20K的信号,更确切地说,当基站10传输信号到给定的移动终端20k时,该信号被复制N次,并且每个复制的信号通过加权矢量的元素进行加权,即相乘,该加权矢量是从将从给定的移动终端20k接收的期望矢量中获得的。 The base station 10 through the antenna BSAnt1 to BSAntN transmission signals to the mobile terminals 201 to 20K to be transmitted, more precisely, when the base station 10 transmitting a signal to a given mobile terminal 20k, the signal is replicated N times, and each copy signal is weighted by the elements of a vector weighting, i.e. multiplying the weight vector from the desired vector is obtained from the given mobile terminal 20k received. 结果,基站10执行波束成形,即控制传输到移动终端201到20K中每个的信号的空间方向。 As a result, the base station 10 performs beamforming, i.e. controls the spatial direction of the transmitted signal of each mobile terminal 201 to 20K.

图1中标记为BF1的椭圆示出由基站10传输到移动终端201的由天线BSAnt1到BSAntN发射的信号的图形。 In FIG 1 marked by the ellipse BF1 shows the base station 10 to the mobile terminal transmitted by the antenna 201 is transmitted BSAnt1 to BSAntN graphic signal.

图1中标记为BFK的椭圆示出由基站10传输到移动终端20K的由天线BSAnt1到BSAntN发射的信号的图形。 FIG 1 marked ellipse BFK shows the pattern of the signals transmitted by the antennas BSAnt1 to BSAntN transmitted by the base station to the mobile terminal 10 and 20K.

同理,每个移动终端201到20K通过其Mk个天线传输将要传输到基站10的信号。 Similarly, each mobile terminal 201 to 20K Mk antennas which transmit the signal to be transmitted by the base station 10. 更确切地说,当移动终端20k传输信号到基站10时,该信号被复制Mk次,并且每个复制的信号通过对于移动终端20k定义的加权矢量的元素进行加权,即相乘,其中k=1到K。 More specifically, when the mobile terminal 20k transmit signals to the base station 10, the signal is copied Mk times duplicated and each signal is weighted by a weight vector for the mobile terminal 20k defined elements, i.e. multiplied, where k = 1 to K. 结果,移动终端20k执行波束成形,即控制传输到基站10的信号的空间方向。 As a result, the mobile terminal 20k performs beamforming, i.e. controls the spatial direction of the signal transmitted to the base station 10.

椭圆BF1示出由移动终端201传输到基站10的由天线MS1Ant1到MS1AntM发射的信号的图形。 Ellipse BF1 shows the pattern transmitted by the mobile terminal 201 to the base station by the antenna 10 to MS1AntM MS1Ant1 transmitted signal.

椭圆BFK示出由移动终端20K传输到基站10的由天线MSKAnt1到MSKAntM发射的信号的图形。 Ellipse BFK shows the pattern transmitted by the mobile terminal 20K to the base station by the antenna 10 to MSKAntM MSKAnt1 transmitted signal.

根据本发明,基站10为每个移动终端201到20K确定在移动终端通过上行信道传输信号到基站10时它必须使用的上行加权矢量。 According to the present invention, the base station 10 to each mobile terminal 201 to 20K determines the uplink channel by the mobile terminal an uplink signal transmission weight vector using the base station 10 it is necessary to.

每个移动终端201到20K通过下行信道从基站10接收一个信号或多个信号,并且从接收的一个信号或多个信号计算在它通过上行信道传输信号到基站10时它必须使用的上行加权矢量。 Each mobile terminal 201 to 20K receives a signal or signals from the base station 10 through the downlink channel and the uplink weight vector or a signal received from a plurality of signals calculated by the uplink channel transmitting its signal to the base station 10 when it must be used .

图2是根据本发明的表示基站的架构的图。 FIG 2 is a diagram showing architecture of a base station according to the present invention.

基站10包括加权矢量确定模块100、标记为Cp1到CpK的K个复制模块、标记为Mul11到MuKN的N*K个乘法模块、以及标记为Sum1到SumN的N个求和模块。 The base station 10 comprises a weighting vector determination module 100, labeled the K CpK Cp1 to copy modules, labeled Mul11 MuKN to the N * K multiplication modules, and labeled SumN Sum1 to the N summing module. K等于链接基站10的移动终端的数量。 K is equal to the number of mobile terminals linked the base station 10. 这里必须注意,K可以等于1到N。 Here it must be noted, K may be equal to 1 N.

信号S1(t)到SK(t)是将被传输到K个链接到基站10的移动终端201到20K的信号。 Signal S1 (t) to SK (t) to be transmitted to K is linked to a signal from the mobile terminal 201 to the base station 10 and 20K. 信号S1(t)到SK(t)中的每个由相应的复制模块Cp1到CpK复制N次。 Signal S1 (t) to SK (t) N times in each replicate by the corresponding copy module Cp1 to CpK. 对于每个将被传输到移动终端20k的信号,其中k=1到K,每个复制的信号由对应于移动终端并且由加权矢量模块100所确定的加权矢量的元素进行加权。 For each signal to be transmitted to the mobile terminal 20k, where k = 1 to K, each duplicated signal is weighted by the elements of the weight vector 100 is determined by a weighting vector corresponding to the module and the mobile terminal. 由天线BSkAnt1到BSkAntM传输到移动终端20K的每个信号的组合被称作波束成形信号。 BSkAntM transmitted by the antenna BSkAnt1 to each signal combination to a mobile terminal is referred to as 20K beamformed signal.

由每个下行加权矢量的第一元素加权的信号然后被求和,并且通过基站10的第一天线BSAnt1进行传输。 Weighted by the first element of each downlink weighting vector are then summed signal, and transmitted through the first antenna BSAnt1 of the base station 10. 由每个加权矢量的第二元素加权的信号然后被求和,并且通过基站10的第二天线BSAnt2进行传输,等等,直到加权矢量的第N元素。 Weighted by the second element of each weighting vector are then summed signal, and transmitted through the second antenna BSAnt2 base station 10, and so on until the N-th element of the weight vector.

这里必须注意,信号在被传输到每个天线之前进行上变频、映射等等,正如在传统无线电信装置中所完成的那样。 Here it must be noted that the signal frequency, and the like prior to being transmitted is mapped to each antenna, as in the conventional radio telecommunication apparatus completed.

根据本发明,加权矢量确定模块100确定加权矢量,所述加权矢量被应用于将要传输到移动终端201到20K的各个信号S1(t)到SK(t),并且其表示每个对应移动终端201到20K在通过上行信道传输信号到基站10时必须使用的上行加权矢量。 According to the present invention, the weighting vector determination module 100 determines a weight vector, the weight vector is applied to the signal to be transmitted to the respective S1 (t) to the mobile terminal 201 to 20K SK (t), and representing each mobile terminal 201 corresponds to 20K uplink weighting vector to the transmission channel through an uplink signal to the base station 10 must be used.

图3是根据本发明的表示移动终端的架构的图。 FIG 3 is a diagram illustrating architecture of a mobile terminal according to the present invention is represented.

每个移动终端201到20K包括上行加权矢量确定模块200、接收矢量模块31以及标记为MSmul1到MSmulM的Mk个乘法模块。 Each mobile terminal 201 to 20K comprises an uplink weighting vector determination module 200, the received vector module 31 and the labeled MSmul1 to MSmulM Mk multiplication modules.

从每个天线MSkAnt1到MSkAntM接收的信号被传输到接收矢量模块31,该接收矢量模块31对它们进行分组以形成接收矢量x(p)或者由多个接收矢量组成的接收矩阵X(p)。 Transmitted signal from each antenna MSkAnt1 to MSkAntM received from the received vector module 31, the module 31 receives a vector grouping them to form the received vector x (p) or by a plurality of receiving the received vector matrix composition X (p).

这里必须注意,从每个天线接收的信号在被传输到接收矢量模块31之前进行下变频、解映射,正如在传统无线电信装置中所完成的那样。 Here it must be noted that the signal received from each antenna at 31 prior to being transferred to the received vector module conversion, de-mapping, as in the conventional radio telecommunication apparatus completed.

接收矢量x(p)或接收矩阵X(p)被传输到上行加权矢量确定模块200,该确定模块200确定必须应用于将通过上行信道传输到基站10的信号SMS(t)的上行加权矢量。 Received vector x (p) or the received matrix X (p) is transferred to the uplink weighting vectors determination module 200, the determination module 200 determines to be applied to be transferred to the base station signal SMS (t) 10, an uplink weighting vector through an uplink channel.

更确切地说,信号SMS(t)被复制成Mk个信号SMS1(t)到SMSM(t)。 More precisely, the signal SMS (t) is copied into Mk signals SMS1 (t) to SMSM (t). 每个复制的信号SMS1(t)到SMSM(t)由上行加权矢量确定模块200所确定的加权矢量vk的相应元素vk1到vkM进行加权。 Each signal SMS1 (t) to copy SMSM (t) is determined by the uplink weighting vector determination module 200 corresponding to the elements of the weighting vector vk vk1 to vkM weighting. 为了形成波束成形信号,每个加权的复制信号SMS1(t)到SMSM(t)被传输到相应的天线MSkAnt1到MSkAntM。 In order to form a beamforming signal, each weighted replica signal SMS1 (t) to SMSM (t) is transmitted to the respective antennas MSkAnt1 to MSkAntM.

这里必须注意,信号在被传输到每个天线之前进行上变频、映射等等,正如在传统无线电信装置中所完成的那样。 Here it must be noted that the signal frequency, and the like prior to being transmitted is mapped to each antenna, as in the conventional radio telecommunication apparatus completed.

考虑一下本发明的理论基础。 Consider the theoretical basis of the present invention.

为简单起见,首先考虑当仅一个移动终端20k被链接到基站10并且移动终端20k知道信道响应矩阵时的情况。 For simplicity, firstly consider when only one mobile terminal 20k is linked to the base station 10 and the mobile terminal 20k knows the channel response matrix when the case.

上行加权矢量确定模块100确定上行加权矢量wk=[wk1,…,wkN]T,其中T表示转置,N表示基站10的天线的数量,以及k是指移动终端20k。 An uplink weighting vector determination module 100 determines the uplink weighting vector wk = [wk1, ..., wkN] T, where T represents transposition, N denotes the number of antennas of the base station 10 and k refers to the mobile terminal 20k.

由基站10传输的信号sk(p)具有等于1的平均信号功率,即E[|sk(p)|2]=1,以及功率Ps(k)。 The signal transmitted by the base station sk 10 (p) having an equal average signal power, i.e., E [| sk (p) | 2] = 1, and a power Ps (k).

由移动终端20k接收的信号x(p)=[x1(p),…,xM(p)]T的第p个采样由下式给出:x(p)=Σn=1NPs(k)(Hwk)sk(p)+z(p).]]>其中H是Mk*N信道响应矩阵,z(p)=[z1(p),…,zM(p)]T是Mk*1的终端干扰加噪声矢量。 Signal x (p) = received by the mobile terminal 20k [x1 (p), ..., xM (p)] p-th sample T is given by: x (p) = & Sigma; n = 1NPs (k) (Hwk) sk (p) + z (p).]]> where H is the Mk * N channel response matrix, z (p) = [z1 (p), ..., zM (p)] T is the Mk * 1 of terminal interference plus noise vector.

基站10获得移动终端20k的信道响应矩阵H。 The base station 10 obtains the mobile terminal 20k is the channel response matrix H.

作为例子并且以非限制性的方式,移动终端20k通过天线BSAnt1到BSAntN将不同的预定义导频信号传输到基站10,并且为了确定移动终端20k的信道响应矩阵,接收的导频信号由基站10处理。 By way of example and in a non-limiting embodiment, the mobile terminal 20k to BSAntN different predefined pilot signal transmission to the base station 10, and in order to determine the channel of the mobile terminal 20k response matrix, received pilot signal from the base station 10 through the antenna BSAnt1 deal with.

移动终端20k利用上行加权矢量 20k mobile terminal using an uplink weighting vector 加权将要传输到基站10的信号,该上行加权矢量由上行加权矢量确定模块200确定,并且其对应于由加权矢量确定模块100确定的上行加权矢量vk,这将随后进行公开。 Weighting the signal to be transmitted to the base station 10, the uplink weighting vector determination module 200 determines the uplink weighting vector, and which corresponds to the weighting vector determination module 100 determines the uplink weighting vector VK, which will subsequently be disclosed. 加权矢量的功率被归一化,即||v~k||=1.]]>这样传输到基站10的信号的第p个采样被标记为r(p),并且具有功率Pr。 Power weighting vector is normalized, i.e. || v ~ k || = 1.]]> So transmitted to the p-th sample signal the base station 10 is marked as R & lt (p), and has a power Pr. 在基站10处接收的信号xBS(p)的第p个采样由下式给出:xBS(p)=PrHTvr(p)+zBS(p)]]>其中zBS(p)是基站10干扰加噪声矢量, Signal XBS (p) received at the base station 10 the p-th sample is given by: xBS (p) = PrHTvr (p) + zBS (p)]]> ZBS wherein (p) is the base station 10 interference plus noise vector, 是上行信道的响应矢量,以及HT是转置的信道响应矩阵。 Uplink channel response vector, and HT is the transpose of the channel response matrix.

根据本发明,基站10,更确切地说,加权矢量确定模块100确定移动终端20k加权传输到基站10的信号所必须使用的上行加权矢量vk,并且将与所确定的上行加权矢量vk有关的信息传输到移动终端20k。 According to the present invention, the base station 10, more precisely, the weighting vector determination module 100 determines the uplink weighting vector vk to the mobile terminal 20k weights the transmission signal of the base station 10 must be used, and information related to the uplink weighting vector vk determined transmitted to the mobile terminal 20k.

在本发明的优选实现方式中,通过由与所确定的上行加权矢量vk有关的信息来加权传输到移动终端20k的信号,基站10将与所确定的上行加权矢量vk有关的信息传输到移动终端20k。 In a preferred implementation of the present invention, the information related to the uplink weighting vector vk determined by weighting a signal transmitted to the mobile terminal 20k through the base station 10 the information related to the transmission of uplink weighting vector vk determined by the mobile terminal 20k.

更确切地说,加权矢量确定模块100计算中间矢量b=PrHTvk,]]>并且确定下行加权矢量wk=b*/‖b‖,其中b*表示b的复共轭。 More precisely, the weighting vectors determination module 100 calculates an intermediate vector b = PrHTvk,]]> and determines the downlink weighting vector wk = b * / ‖b‖, b where b * denotes the complex conjugate.

这里必须注意,矢量b是基站10期望从移动终端20k接收的响应矢量,只要它是由上行加权矢量vk和信道响应矩阵H的转置组成的。 It is noted here that the vector b is the base station 10 receives the expected response vectors from the mobile terminal 20k, as long as it is the transpose of the matrix H in response to the uplink weighting vector vk and the channel thereof.

在本发明的优选实现方式中,基站10使用下行时隙以用于传送由确定的下行加权矢量wk所加权的导频信号。 In a preferred implementation of the present invention, the base station 10 using the downlink time slot for transmitting the downlink weighting vector wk determined weighted pilot signals.

这里必须注意,在实现的变型中,基站10通过将其插入传统用于传输数据的下行信道的时隙来将上行加权矢量vk或下行加权矢量wk传输到移动终端20k。 Here it must be noted that, in a variant implementation, the base station 10 by inserting slot for downlink conventional channel to transmit data to the uplink weighting vector vk or the downlink weighting vector wk to the mobile terminal 20k.

根据优选的实现方式,移动终端20k接收标记为a的接收矢量,其等于:a=Hwk=Hb*||b||=PrHHHvk*||b||.]]>使用已知的信道信息HHH,移动终端20k将上行加权矢量 According to a preferred implementation, the mobile terminal 20k receives a received vector is labeled, which is equal to:. A = Hwk = Hb * || b || = PrHHHvk * || b ||]]> using known channel information HHH , the mobile terminal 20k uplink weighting vector 计算为:v~k={(HHH)+a}*||{(HHH)+a}*||,]]>其中+是穆尔-彭罗斯广义矩阵求逆,HH表示H的复共轭转置。 Calculated as: v ~ k = {(HHH) + a} * || {(HHH) + a} * ||,]]> where + is the Moore - Penrose generalized inverse matrix, HH H denotes the complex conjugate conjugate transpose.

穆尔-彭罗斯广义矩阵求逆对应于:(Q0Δ000Q0H)+=Q0Δ-1000Q0H]]>其中Q0是Mk*Mk酉矩阵(unitary matrix),以及Δ是m*m可逆矩阵,其中m≤M。 Moore - Penrose generalized matrix inverse corresponds to: (Q0 & Delta; 000Q0H) + = Q0 & Delta; -1000Q0H]]> where Q0 is the Mk * Mk unitary matrix (unitary matrix), and Δ is a m * m invertible matrix, wherein m ≤M.

上行加权矢量 Uplink weighting vector 等于由基站10所确定的上行加权矢量vk。 It is equal to the uplink weighting vector vk determined by the base station 10.

的确,以奇异值分解来分解信道相应矩阵H。 Indeed, the singular value decomposition to decompose a channel matrix corresponding to H.

H被分解为H=QΛUH其中Q=[q1,…,qM]是Mk*Mk酉矩阵,UH是矩阵U的复共轭转置,U=[u1,…,uN]是N*N酉矩阵,Λ=diag[λ1,λ2,…,λmin(M,N)]是Mk*N对角矩阵,以及λ1≥λ2≥…≥λmin(M,N)≥0。 H is decomposed into H = QΛUH where Q = [q1, ..., qM] is the Mk * Mk unitary matrix, UH is the matrix U complex conjugate transpose, U = [u1, ..., uN] is the N * N unitary matrix , Λ = diag [λ1, λ2, ..., λmin (M, N)] is the Mk * N diagonal matrix, and λ1≥λ2≥ ... ≥λmin (M, N) ≥0.

非零实元素λn的数量被表示为d,也就是λd>0,并且λd+1=0。 Λn nonzero real number of elements is represented as d, i.e. λd> 0, and λd + 1 = 0.

Mk*1的矢量vk可以被写为q1*,…,qM*的线性组合,其中x*表示x的复共轭。 Mk * 1 vector vk can be written as q1 *, ..., qM * linear combination, where x * represents complex conjugate of x.

vk=f1q1*+…+fMqM*然后,期望的响应矢量b=PrHTvk]]>可以被表示为:b=PrU*&Lambda;TQTvk=Pr&Sigma;n=1dfM&lambda;nun*]]>这里必须注意,如果d<M,那么获得期望的响应矢量b的加权矢量vk在fd+1,…,fM具有自由度。 vk = f1q1 * + ... + fMqM * Then, the expected response vector b = PrHTvk]]> may be expressed as: b = PrU * & Lambda; TQTvk = Pr & Sigma; n = 1dfM & lambda; nun *]]> be noted here that, if d <M, then the response vector b to obtain the desired weight vector vk in fd + 1, ..., fM degree of freedom.

然后,所提出的方案选择加权矢量vk其中fd+1=…=fM=0。 Then, the proposed scheme selected weighting vector vk wherein fd + 1 = ... = fM = 0. vk然后可以被限制到子空间以作为vk=f1q1*+…fdqd*。 vk can then be restricted to a subspace as vk = f1q1 * + ... fdqd *.

(HHH)*可以被重写为:(HHH)*=Q*Ψ(Q*)H其中,如果d=Mk,则Ψ=diag[λ12,λ22,…,λM2],或者如果d<Mk,则Ψ=diag[λ12,λ22,…,λd2,0,…,0]。 (HHH) * can be rewritten as: (HHH) * = Q * Ψ (Q *) H wherein if d = Mk, then Ψ = diag [λ12, λ22, ..., λM2], or if d <Mk, the Ψ = diag [λ12, λ22, ..., λd2,0, ..., 0].

Ψ是Mk*Mk对角矩阵,q1*,…,qM*是(HHH)*的特征矢量,其具有非零特征值。 Ψ is the Mk * Mk diagonal matrix, q1 *, ..., qM * is (HHH) * feature vectors, which have non-zero eigenvalues.

使用穆尔-彭罗斯广义逆的数学公式,(HHH)+由下式给出:(HHH)+=QΨ-QH其中,如果d=Mk,则Ψ-=diag[λ1-2,λ2-2,…,λM-2],或者如果d<Mk,Ψ=diag[λ1-2,λ2-2,…,λd-2,0,…,0]。 Use Moore - Penrose generalized inverse of a mathematical formula, (HHH) + is given by: (HHH) + = QΨ-QH wherein, if d = Mk, the Ψ- = diag [λ1-2, λ2-2 , ..., λM-2], or if d <Mk, Ψ = diag [λ1-2, λ2-2, ..., λd-2,0, ..., 0].

因此,{(HHH)+HHH}*=&Sigma;n=1dqn*qnT.]]>然后{(HHH)+HHH}*vk=vk,并且v~k={(HHH)+HHHvk*}*||{HHH)+HH+vk*}*||=vk||vk||=vk.]]>因为v~k=vk]]>,所以基站10然后可以通过下行加权矢量wk将适当的上行加权矢量vk指示给移动终端20k,并且控制由移动终端20k进行的信号传输。 Thus, {(HHH) + HHH} * = & Sigma; n = 1dqn * qnT]]> and {(HHH) + HHH} * vk = vk, and v ~ k = {(HHH) + HHHvk *} * |. |. {HHH) + HH + vk *} * || = vk || vk || = vk]]> as v ~ k = vk]]>, then the base station 10 through the downlink weighting vector wk appropriate uplink weighting vector vk to the mobile terminal indicating 20k, and the control signal transmitted by the mobile terminal 20k.

现在考虑这种情况,其中仅仅一个移动终端20k被链接到基站10,并且移动终端20k不知道信道信息比如HHH。 Now consider the case where only one mobile terminal 20k is linked to the base station 10 and the mobile terminal 20k does not know channel information such as HHH.

在这种情况下,移动终端20k需要估计响应矢量a或信道信息HHH。 In this case, the mobile terminal 20k needs to estimate the channel response vector a or information HHH.

为了允许移动终端20k估计信道信息HHH,基站10发送多个导频信号sn(p),其中n=1到N,所述导频信号使用不同的下行加权矢量w1到wN进行加权。 Allow the mobile terminal 20k to estimate the channel information HHH, the base station 10 transmits a plurality of pilot signals sn (p), where n = 1 to N, the pilot signals using different frequency weighting vectors w1 to wN downlink weighting.

矢量w1到wN被定义为相互正交,因此WWH=I并且W=[w1,…,wN]。 Vectors w1 to wN are defined as mutually orthogonal, so WWH = I and W = [w1, ..., wN].

这里,w1到wN下行加权矢量之一是为移动终端20k确定的下行加权矢量wk。 Here, w1 to wN downlink weighting vectors, one mobile terminal 20k is determined downlink weighting vector wk. 该下行加权矢量wk等于:wk=b*/‖b‖,其中b=PrHTvk.]]>矢量b是基站10期望从移动终端20k接收的响应矢量。 The downlink weighting vector wk is equal to: wk = b * / ‖b‖, where b = PrHTvk]]> vector b is the base station 10 receives the expected response vectors from the mobile terminal 20k..

假定由基站10传输的每个信号具有发射功率Ps,接收的信号矢量x(p)等于x(p)=&Sigma;n=1NPsHwnsn(p)+z(p).]]>对于第1,...,第P0符号的序列的接收信号以矩阵形式被表示为:X=[x(1),...,x(p0)]=PsHWS+Z]]>这里必须注意,导频信号由符号的序列组成。 10 is assumed to have the signal transmitted by each base station transmit power Ps, the received signal vector x (p) equal to x (p) = & Sigma;. N = 1NPsHwnsn (p) + z (p)]]> for 1 ,. .., P0 received signal sequence of symbols is represented in matrix form as: X = [x (1), ..., x (p0)] = PsHWS + Z]]> be noted here that, by the pilot signal symbol sequence composition.

其中S=s1(1).........s1(p0)...............sN(1).........sN(p0),]]>Z=[z(1),...,z(P0)]因为导频信号相互正交,所以SSH=p0I。 Where S = s1 (1) ......... s1 (p0) ............... sN (1) ......... sN ( p0),]]> Z = [z (1), ..., z (P0)] since the pilot signals orthogonal to each other, SSH = p0I.

移动终端20k将矩阵A=HW和an=Hwn估计为:A~=1p0XSH=PsHW+1p0ZSH]]>a~k=1p0XskH=PsHwk+1p0ZskH]]>其中sk=[sk(1),...,sk(p0)]因为HHH=HWWHHH,移动终端20k将加权矢量 The mobile terminal 20k of the matrix A = HW and an = Hwn estimated as: A ~ = 1p0XSH = PsHW + 1p0ZSH]]> a ~ k = 1p0XskH = PsHwk + 1p0ZskH]]> where sk = [sk (1), ... , sk (p0)] since HHH = HWWHHH, the mobile terminal 20k the weighting vectors 估计为v~k={(A~A~H)+a~k}*||{A~A~H)+a~k}||.]]>因此,通过传输由N个正交下行加权矢量w1到wk加权的导频符号,基站10使移动终端20k能够确定上行加权矢量 Estimated as v ~ k = {(A ~ A ~ H) + a ~ k} * || {A ~ A ~ H) + a ~ k} ||.]]> Thus, by transmitting the N orthogonal downlink weighting vectors w1 to wk weighted pilot symbols, the base station 10 that the mobile terminal 20k is able to determine the uplink weighting vector ,并且控制由移动终端20k进行的信号传输。 And the control signal transmitted by the mobile terminal 20k.

现在考虑这种情况,其中K=N个移动终端201到20N被链接到基站10,并且移动终端201到20N不知道信道响应矩阵。 Now consider the case where K = N mobile terminals 201 to 20N are linked to the base station 10 and the mobile terminal 201 to 20N do not know the channel response matrix.

例如对于空分多址正是这种情况,其中基站10需要为K个移动终端201到20K确定上行加权矢量v1到vK。 For example, space division multiple access this is the case, where the base station 10 needs to K mobile terminals 201 to 20K determines the uplink weighting vectors v1 to vK.

为了满足这点,基站10为相应的移动终端201到20K确定加权矢量v1到vK,以便基站从每个相应的移动终端201到20K接收期望的响应矢量bk=PrHkTvk,]]>其中k=1到K。 To meet this, the base station 10 to the corresponding mobile terminal 201 to 20K determines weighting vectors v1 to vK, so that the base station receives a desired response vectors bk = PrHkTvk from each respective mobile terminals 201 to 20K,]]> where k = 1 to K.

基站10根据下面的约束来确定响应矢量bk:矩阵B=[b1/‖b1‖,…,bN/‖bN‖]不是奇异矩阵,即如果B的行列式不等于零。 The base station 10 is determined according to the following constraints response vectors bk: the matrix B = [b1 / ‖b1‖, ..., bN / ‖bN‖] is not a singular matrix, i.e. if the determinant of B is not equal to zero.

基站10传输信号S1(t)到SN(t),其由导频信号形成。 The base station 10 transmitted signal S1 (t) to SN (t), which is formed by a pilot signal. 信号S1(t)到SN(t)分别由上行加权矢量w1到wk加权。 Signal S1 (t) to SN (t) are respectively weighted by the uplink weighting vectors w1 to wk.

在这种情况下,加权矢量wk(k=1到K)等于:wK=(B*BT)-1bk*/||bk||.]]>所有的结构,比如导频信号和终端的加权计算方法,与前面所提到的类似。 In this case, the weighting vector wk (k = 1 to K) is equal to: wK = (B * BT) -1bk * / || bk ||]]> all structures, such as weighted pilot signal and a terminal. calculation method similar to the aforementioned. 因此,第k个移动终端20k将矩阵Ak和ak估计为:A~k=1p0XSH=HkW=Hk(B&CenterDot;BT)-1B*=Hk(BT)-1]]>a~k=1p0XskH=Hk(B*BT)-1bk*/||bk||]]>其中Hk表示用于给定的移动终端20k的信道响应矩阵。 Thus, the k-th mobile terminal 20k of the matrix Ak and ak is estimated to be: A ~ k = 1p0XSH = HkW = Hk (B & CenterDot; BT) -1B * = Hk (BT) -1]]> a ~ k = 1p0XskH = Hk (B * BT) -1bk * / || bk ||]]> where Hk represents a channel for a given mobile terminal 20k response matrix.

然后,第k个移动终端20k能够使用下列公式计算上行加权矢量 Then, the k-th mobile terminal 20k can be calculated using the formula uplink weighting vector v~k={(A~kA~kH)+ak~}*||{A~kA~kH)+a~k}*||]]>使用Hk0=Hk(BT)-1, v ~ k = {(A ~ kA ~ kH) + ak ~} * || {A ~ kA ~ kH) + a ~ k} * ||]]> using Hk0 = Hk (BT) -1, 可以被重写为:{(A~kA~kH)+a~k}*=(Pr/||bk||{(Hk0Hk0H)+Hk0Hk0H}*vk]]>假定加权矢量 It can be rewritten as: {(A ~ kA ~ kH) + a ~ k} * = (Pr / || bk || {(Hk0Hk0H) + Hk0Hk0H} * vk]]> assuming the weighting vector 被限制在Hk0Hk0H的特征矢量的子空间,其对应于非零特征值,与上述相同的理论过程导致v~k=vk.]]>因此,基站10可以定义K个移动终端上行加权矢量vk。 Is limited Hk0Hk0H feature vector subspace, which corresponds to the non-zero eigenvalues, the same theoretical process as described above results in v ~ k = vk.]]> Thus, the base station 10 can define the K mobile terminals uplink weighting vectors vk.

这里必须注意,上面的控制方案对于不同的下行加权矢量wk被单独地执行。 Here it must be noted that the above control scheme is performed individually wk for different downlink weighting vectors. 还可能的是,为了通过使用不同的下行加权矢量vk传输多个数据流,移动终端20k使用多个上行加权矢量vk。 It is also possible, in order by using different downlink weighting vectors vk transmit multiple data streams, the mobile terminal 20k uses multiple uplink weighting vectors vk.

这里还必须注意,当移动终端201到20K的数目K低于基站10的天线的数目N时,基站10选择适当的矢量bK+1,…,bN。 Here it must also be noted that, when the number of K 201 to the mobile terminal 20K to the base station antenna 10 is less than N, the base station 10 selects the appropriate vectors bK + 1, ..., bN.

例如,bn(n=K+1,…,N)被选择为与其它确定的矢量b1,…,bK正交。 For example, bn (n = K + 1, ..., N) is selected to be ..., bK other orthogonal vector b1 determined.

使用矢量b1,…,bK,基站10确定K个移动终端的加权矢量,矢量bK+1,…,bN被用于估计,通过移动终端201到20K来估计它们的矩阵Hk(BT)-1。 Using the vector b1, ..., bK, the base station 10 determines the weighting vectors of the K mobile terminals, the vectors bK + 1, ..., bN are used to estimate, by the mobile terminal 201 to 20K to estimate their matrix Hk (BT) -1.

图4是根据本发明的表示基站的加权矢量确定模块的架构的图。 FIG 4 is a view of a module weighting vector determined according to the architecture of the present invention represented by the base station.

例如,基站10的加权矢量确定模块100具有一种基于由总线401和由如图8公开的程序所控制的处理器400连接在一起的部件的架构。 For example, the weighting vectors determination module 100 of the base station 10 has a connection member 401 based on a program and the processor 8 controlled disclosed together bus 400 architecture.

总线401将处理器400连接到只读存储器ROM 402、随机存取存储器RAM403、矢量接口406和信道接口405。 The bus 401 connecting the processor 400 to a read only memory ROM 402, a random access memory RAM403, a vector interface 406 and a channel interface 405.

存储器403包含打算接收变量的寄存器以及与如图8所公开的算法有关的程序的指令。 The memory 403 contains registers intended to receive variables and the instructions of the algorithm disclosed in Figure 8 about the program.

处理器400确定加权矢量w1到wk和v1到vk。 The processor 400 determines the weighting vectors w1 to wk and v1 to vk. 例如,上行加权矢量v1到vk考虑到由环境引起的干扰而被确定。 For example, the uplink weighting vectors v1 to vk taking into account interference caused by the environment is determined.

只读存储器402包含与如图8所公开的算法有关的程序的指令,所述指令在基站10被加电时被传输到随机存取存储器403。 A read only memory 402 contains instructions of the algorithm disclosed in Figure 8 about the program, the instruction is transmitted to the random access memory 403 at the base station 10 is powered on.

矢量接口406允许所确定的下行加权矢量w1到wk的元素w11到wKN传输到相应的乘法器Mul11到MulKN。 Vector interface 406 allows the determined downlink weighting vectors w1 to wk elements w11 to wKN transferred to the corresponding multipliers Mul11 to MulKN.

信道接口405适于从移动终端201到20K接收导频信号,并且为移动终端201到20K中的每个执行信道响应矩阵的估计。 The channel interface 405 is adapted to estimate the received pilot signal to 20K mobile terminal 201, and performs response matrix for each channel in the mobile terminal 201 to 20K from.

图5是根据本发明的表示移动终端的上行加权矢量确定模块的架构的图。 FIG 5 is a view of the mobile terminal an uplink weighting vector determination module architecture according to the present invention is represented.

例如,移动终端20k的上行加权矢量确定模块200具有一种基于由总线501和程序所控制的处理器500连接在一起的部件的架构,如图5所公开。 For example, the mobile terminal 20k uplink weighting vectors determination module 200 has a processor architecture based on the bus 501 and control program 500 are connected together member, as disclosed in FIG. 5.

总线501将处理器500连接到只读存储器ROM502、随机存取存储器RAM503、矢量接口505。 The processor bus 501 to a read only memory 500 connected to the ROM 502, a random access memory RAM503, a vector interface 505.

存储器503包括打算接收变量的寄存器以及与如图9中公开的算法有关的程序的指令。 The memory 503 includes registers intended to receive variables and the instructions of the algorithm disclosed in FIG. 9 related to the program.

处理器500确定上行加权矢量v1到vk,如将参考图9所公开的。 The processor 500 determines the uplink weighting vectors v1 to vk, as will be disclosed with reference to FIG. 9.

只读存储器502包含与如图9所公开的算法有关的程序的指令,所述指令在移动终端20k被加电时被传输到随机存取存储器503。 A read only memory 502 contains instructions of the algorithm disclosed in FIG. 9 related to the program, the instructions are in the mobile terminal 20k is transferred to a random access memory 503 is powered.

矢量接口506允许所确定的上行加权矢量vk的元素vk1到vkN传输到相应的乘法器MSmulk1到MSmulkM。 Vector interface 506 allows the uplink weighting vector vk determined by the elements vk1 to vkN transferred to the corresponding multipliers MSmulk1 to MSmulkM.

图6是根据本发明的表示上行和下行信道的图。 FIG 6 is a diagram of the invention showing the uplink and downlink channels.

当该系统使用时分双工方案时,下行信道610中传输的信号和上行信道620中传输的信号在相同频带的不同时间周期中进行双工。 When the system uses Time Division Duplexing scheme, the signals transmitted in the downlink channel 610 and the uplink transmission channel 620 for duplexing signals at different time periods in the same frequency band. 下行信道610和上行信道620被分成时隙。 610 downlink channel 620 and the upstream channel is divided into time slots. 下行信道610包括若干时隙以用于传输传统信号到移动终端201到20K。 Downlink channel 610 comprises several time slots for the conventional signal transmission to the mobile terminal 201 to 20K. 这样的时隙被分组在标记601中。 Such time slots are grouped in the tag 601. 根据本发明,下行信道610的一个时隙602是一个指令时隙。 According to the present invention, a slot 610 downlink channel 602 is an instruction time slot. 该指令时隙602将参考图7a被更精确地说明。 The instruction time slot 602 7a will be described more precisely with reference to FIG.

指令时隙602优选是下行信道600的最后时隙。 Instruction slots 602 preferably is a downlink channel 600 of the last slot. 当指令时隙对于上行信道620是关闭的时,降低了信道变化。 When the instruction slots to the uplink channel 620 is closed, reducing the channel variation.

上行信道620包括若干时隙以用于传输传统信号到基站10。 Uplink channel 620 comprises several time slots for transmission to the base station 10 of the conventional signal. 这样的时隙被分组在标记612中。 Such time slots are grouped in the tag 612. 在图6中,上行信道620的一个时隙611被用作一个识别时隙。 In FIG. 6, a slot 611 uplink channel 620 is used as an identification time slot. 识别时隙611将参考图7b被更精确地说明。 Identifying slot 611 with reference to FIG. 7b is described more precisely.

图7a是根据本发明的表示在下行信道中包含的指令时隙的图。 FIG 7a is a downlink channel in accordance with instructions contained in the slot of the present invention represented.

在图6的下行信道610中包含的指令时隙602包括至少导频信号,所述导频信号由与移动终端20k有关的上行加权矢量wk进行加权,对于所述移动终端20k来传输在下行信道601内包含的信息。 Instruction slots 602 contained in the downlink channel 610 of FIG. 6 comprises at least a pilot signal, the pilot signal by the weighting associated with the mobile terminal 20k uplink weighting vector wk, to the mobile terminal 20k is transmitted in the downlink channel 601 contains the information.

指令时隙602在实现的变型中进一步包括用户ID,其允许识别移动终端20k,对于所述移动终端20k来传输指令。 Further comprising instruction slots 602 in variant implementations of a user ID, which allows the identification of the mobile terminal 20k, 20k to the mobile terminal to transmit instructions.

指令时隙602在实现的变型中进一步包括将由移动终端20k使用的调制和编码方案(MCS),对于所述移动终端20k来传输指令。 Instruction slot 602 further comprises a modulation and coding scheme (MCS) used by the mobile terminal 20k in a variant implementation, the instruction is transmitted to the mobile terminal 20k.

图7b是根据本发明的表示在上行信道中包含的识别时隙的图。 Figure 7b is a diagram illustrating an uplink channel identification comprising slots according to the present invention is represented.

在图6的上行信道610中包含的识别时隙611包括至少导频信号,所述导频信号由上行加权系数vk进行加权,并且其被传输到基站10。 Identifying the time slot 611 contained in the uplink channel 610 of FIG. 6 comprises at least a pilot signal, the pilot signal is weighted by the uplink weighting coefficient VK, and it is transmitted to the base station 10. 这样的导频信号优选地等于前面所述的由移动终端20k在指令时隙602中接收的导频信号。 Such a pilot signal is preferably equal to previously received by the mobile terminal 20k in the instruction time slot 602 of the pilot signal. 通过使用与下行信道中使用的相同的导频信号并且只要导频信号对于每个移动终端201到20k是不同的,那么对于基站10有可能的是,确定移动终端201到20K中哪个在该时隙中发送信号。 The same pilot signal by using a downlink channel used as long as the pilot signal for each mobile terminal 201 to 20k are different, it is possible for the base station 10 that the mobile terminal 201 to determine which of the 20K when slot send signals.

在实现的变型中并且当传输的导频信号不同于从基站10接收的导频信号时,识别时隙611进一步包括用户ID,其允许基站10识别在该时隙内发送信号的移动终端201到20K。 In a variant of realization and when the transmission of the pilot signal is different from the base station 10 from the received pilot signal, identifying the time slot 611 further includes a user ID, which allows the base station 10 identifies the mobile terminal transmits a signal within the time slot 201 to 20K.

在实现的变型中,识别时隙611进一步包括与在后面分组中所包含的数据有关的信息比如分组号或者与先前由移动终端201到20K接收的数据有关的信息比如确认。 In variant implementations, the identification time slot 611 further comprises information such as number of packets associated with the data packet contained in the back or the information about the data received by the mobile terminal 201 to 20K confirm previous example.

这里必须注意,在识别时隙中所包含的信号或信息是被包含在至少分组的报头中的变型,该分组被包含在其中一个时隙612中。 Here it must be noted that the identification signal included in a slot or the information contained in the header at least a variant of the packet, wherein the packet is contained in a slot 612. 在这样的变型中,识别时隙611从下行信道中被除去。 In such a variant, the identification time slot 611 is removed from the downlink channel.

图8是由基站执行的用于确定移动站的加权矢量以及用于传输与加权矢量有关的信息的算法。 FIG 8 is performed by a base station for determining a weight vector for the mobile station and the transmission and algorithm information associated weighting vector.

图8的算法更确切地说由加权矢量确定模块100的处理器400执行。 More particularly the algorithm of FIG. 8 is determined by the weight vector 400 of the processor module 100 performs.

加权矢量确定模块100的处理器400为链接到基站10的每个移动终端201到20K在周期的基础上来执行。 Weighting vectors determination module 100 of the processor 400 is linked to a base station 10 of each mobile terminal 201 to 20K in the period up execution.

在步骤S800,处理器400识别必须为其执行本算法的移动终端20k。 In step S800, the processor 400 must identify the mobile terminal 20k for which the present algorithm is executed.

在下一步S801,处理器400确定上行加权矢量vk,移动终端20k必须使用该矢量来加权传输到基站10的信号。 In the next step S801, the processor 400 determines the uplink weighting vector vk, the mobile terminal 20k weighting vector must be used to transmit the signal to the base station 10.

作为例子并且以非限制性的方式,基站10从移动终端20k接收预定义的导频信号。 By way of example and in a non-limiting embodiment, the base station 10 receiving a predefined pilot signals from the mobile terminal 20k. 基站10根据由环境所引起的干扰来确定上行加权矢量vk。 The base station 10 determines the uplink weighting vector vk according to the interference caused by the environment.

在下一步S802,处理器400确定移动终端20k的信道响应矩阵。 In the next step S802, the processor 400 determines the channel response matrix for the mobile terminal 20k. 例如,移动终端20k的标记为H或Hk的信道响应矩阵根据从移动终端20k接收的导频信号来确定。 For example, the mobile terminal 20k is labeled Hk is a channel matrix H or determined according to the pilot signal received in response from the mobile terminal 20k.

在下一步S803,处理器400确定以后将从移动终端20k接收的期望响应矢量bk=PrHTvk.]]>当多个移动终端201到20K被链接到基站10时,处理器400根据下面的约束来确定响应矢量bk:矩阵B=[b1/‖b1‖,…,bN/‖bN‖]不是奇异矩阵。 After the next step S803 from the mobile, the processor 400 determines the terminal 20k receives the expected response vectors bk = PrHTvk.]]> When a plurality of mobile terminals 201 to 20K linked to the base station 10, the processor 400 is determined according to the following constraints response vectors bk: the matrix B = [b1 / ‖b1‖, ..., bN / ‖bN‖] is not singular.

在下一步S804,处理器400为移动终端20k确定加权矢量wk。 In the next step S804, the processor 400 of the mobile terminal 20k is determined weighting vector wk.

当多个移动终端201到20K被链接到基站10时,处理器400使用下列公式来确定wk:wk=(B*BT)-1bk*/||bk||.]]> When a plurality of mobile terminals 201 to 20K linked to the base station 10, the processor 400 use the following equation to determine wk: wk = (B * BT) -1bk * / || bk ||]]>.

当单个移动终端20k被链接到基站10时,处理器400使用下列公式来确定wk:wk=bk*/||bk||.]]>在下一步S805,处理器400选择用于移动终端20K的一些导频信号。 When a single mobile terminal 20k is linked to the base station 10, the processor 400 use the following equation to determine wk: wk = bk * / || bk ||]]> In the next step S805, the processor 400 selects the mobile terminal 20K. Some pilot signal. 根据本发明的优选实现方式,传输到每个移动终端201到20K的导频信号彼此不同。 According to a preferred implementation of the invention, the transmission of the pilot signal differ from one another for each of the mobile terminal 201 to 20K.

在下一步S806,导频信号被选择为信号S1(t)到SK(t),其由相应的复制模块Cp1到CpK复制N次,由下行加权矢量wk的元素进行加权,求和并且通过相应天线BSAnt1到BsAntN传输。 In the next step S806, the pilot signal is selected as a signal S1 (t) to SK (t), which is replicated by the replication module corresponding to Cp1 CpK N times, weighted by the elements of a downlink weighting vector wk, summed and through the corresponding antenna BSAnt1 to BsAntN transmission.

这里必须注意,当移动终端20k不知道信道信息比如HHH响应矩阵时,基站10发送多个导频信号sn(p),其中n=1到N,其使用不同的下行加权矢量w1到wN进行加权。 Here it must be noted that, when the mobile terminal 20k does not know channel information such as when HHH response matrix, 10 transmits a plurality of guide base pilot signal sn (p), where n = 1 to N, using different downlink weighting vectors w1 weighted to wN .

矢量w1到wN被定义为相互正交,因此WWH=I并且W=[w1,…,wN]。 Vectors w1 to wN are defined as mutually orthogonal, so WWH = I and W = [w1, ..., wN].

w1到wN下行加权矢量之一是为移动终端20k确定的下行加权矢量wk。 w1 to wN downlink weighting vectors, one mobile terminal 20k is determined downlink weighting vector wk.

然后加权导频信号通过下行信道传输。 Then weighted pilot channel signal transmitted through the downlink channel. 优选地,加权的导频信号和参考图7a所描述的信息通过指令时隙602被传输。 Preferably, the information and the weighted pilot signals as described with reference to FIGS. 7a through the instruction time slot 602 is transmitted.

处理器400然后返回到步骤S800。 Processor 400 then returns to step S800.

图9是由移动终端站执行的用于根据从基站接收的信息来确定加权矢量的算法。 9 is a weighting vector determined according to information received from the base algorithm executed by a mobile terminal station.

图9的算法更确切地说由加权矢量确定模块200的处理器500执行。 More particularly the algorithm of Figure 9 is determined by the weighting vector processor 500 performs module 200.

在步骤S900,接收的信号矢量由接收矢量模块31形成并且被传输到加权矢量确定模块200。 In step S900, the received signal vector formed by the received vector module 31 and transferred to the weighting vector determination module 200.

当仅仅一个移动终端20k被链接到基站10并且移动终端20k知道信道响应矩阵矢量H时,接收的单个矢量被传输并且等于:a=Hwk=Hb*/||b||=PrHHHvk*/||b||]]>在这种情况下,处理器500然后移动到步骤S903。 When only one mobile terminal 20k is linked to the base station 10 and the mobile terminal 20k knows the channel response matrix vector H, a single received vector is transferred and is equal to: a = Hwk = Hb * / || b || = PrHHHvk * / || b ||]]> in this case, the processor 500 then moves to step S903.

当一个移动终端20k被链接到基站10并且移动终端20k不知道信道信息比如HHH或者多个移动终端201到20K被链接到基站10时,第1,…,第p0个符号的序列的接收矢量以矩阵形式被表示为:X=[x(1),...,x(p0)]=PsHWS+Z]]>其中S=s1(1).........s1(p0)...............sN(1).........sN(p0),]]>Z=[z(1),...,z(p0)]在下一步S901,如果—个移动终端20k被链接到基站10,那么处理器500估计矩阵a~k=1p0XskH=PsHwk+1p0ZskH]]>,其中Sk=[Sk(1),...,Sk(P0)]。 When one mobile terminal 20k is linked to the base station 10 and the mobile terminal 20k does not know channel information such as HHH or plural mobile terminals 201 to 20K are linked to 10, the first base station, ..., received vector sequence of p0 symbols to matrix is ​​expressed as: X = [x (1), ..., x (p0)] = PsHWS + Z]]> where S = s1 (1) ......... s1 (p0) ............... sN (1) ......... sN (p0),]]> Z = [z (1), ..., z ( P0)] in, if the next step S901 - mobile terminal 20k is linked to the base station 10, the processor 500 estimates the matrix a ~ k = 1p0XskH = PsHwk + 1p0ZskH]]>, where Sk = [Sk (1), ... , Sk (P0)].

如果多个移动终端201到20K被链接到基站10,那么处理器500估计矩阵a~k=Hk(B*BT)-1b*k/||bk||.]]>在下一步S902,如果一个移动终端20k被链接到基站10,那么处理器500估计矩阵A~=1p0XSH=PsHW+1p0ZSH.]]>如果多个移动终端201到20K被链接到基站10,那么处理器500估计矩阵A~k=HkW=Hk(B*BT)-1B*.]]>在下—步S903,处理器500估计上行加权矢量 If a plurality of mobile terminals 201 to 20K linked to the base station 10, the processor 500 estimates the matrix a ~ k = Hk (B * BT) -1b * k / || bk ||.]]> In the next step S902, if a the mobile terminal 20k is linked to the base station 10, the processor 500 estimates the matrix A ~ = 1p0XSH = PsHW + 1p0ZSH.]]> if a plurality of mobile terminals 201 to 20K linked to the base station 10, the processor 500 estimates the matrix A ~ k = HkW = Hk (B * BT) -1B *]]> next - step S903, the processor 500 estimates the uplink weighting vector 当仅仅一个移动终端20k被链接到基站10并且移动终端20k知道信道响应矩阵矢量H时,上行加权矢量 When only one mobile terminal 20k is linked to the base station 10 and the mobile terminal 20k knows the channel response matrix vector H, the uplink weighting vector 等于:v~k={(HHH)+a}*||{HHH)+a}*||.]]>如果一个移动终端20k被链接到基站10,那么上行加权矢量 It is equal to:. V ~ k = {(HHH) + a} * || {HHH) + a} * ||]]> if one mobile terminal 20k is linked to the base station 10, the uplink weighting vector 等于:v~k={(A~A~H)+a~k}*||{A~A~H)+a~k}||.]]>如果多个移动终端201到20K被链接到基站10,那么上行加权矢量 Is equal to:. V ~ k = {(A ~ A ~ H) + a ~ k} * || {A ~ A ~ H) + a ~ k} ||]]> if a plurality of mobile terminals 201 to 20K are linked to the base station 10, the uplink weighting vector 等于:v~k={(A~kA~kH)+a~k}*||{A~kA~kH)+a~k}||.]]>在步骤S904中,上行加权矢量 It is equal to:. V ~ k = {(A ~ kA ~ kH) + a ~ k} * || {A ~ kA ~ kH) + a ~ k} ||]]> In step S904, the uplink weighting vector 的元素被传输。 Element is transmitted. 将被传输给基站10的信号SMS(t)被复制成Mk个信号SMS1(t)到SMSM(t)。 SMS signal to be transmitted to the base station 10 (t) is copied into the signal SMSl Mk (t) to SMSM (t). 每个复制的信号SMS1(t)到SMSM(t)由上行加权矢量确定模块200所确定的加权矢量vk的相应元素vk1到vkM进行加权。 Each signal SMS1 (t) to copy SMSM (t) is determined by the uplink weighting vector determination module 200 corresponding to the elements of the weighting vector vk vk1 to vkM weighting. 为了形成波束成形信号,每个加权的复制信号SMS1(t)到SMSM(t)被传输到相应的天线MSkAnt1到MSkAntM。 In order to form a beamforming signal, each weighted replica signal SMS1 (t) to SMSM (t) is transmitted to the respective antennas MSkAnt1 to MSkAntM.

在实现的优选方式中,加权的复制信号SMS1(t)到SMSM(t)是通过上行信道传输的导频信号。 In a preferred implementation, the weighted replica signal SMS1 (t) to SMSM (t) is turned through an uplink pilot signal transmission channel. 优选地,加权的导频信号和参考图7b所描述的信息通过信息时隙611被传输。 Preferably, the information and the weighted pilot signals as described with reference to FIG. 7b is transmitted through the time slot information 611.

处理器500然后返回步骤S900以便处理新接收的矢量。 Processor 500 then returns to step S900 in order to process new received vectors.

本发明已经在时分双工方案的情况进行了描述。 The present invention has been described in the case of a time division duplexing scheme. 必须注意,本发明也适用于频分双工,从而允许由于上行和下行信道之间的不同信道矩阵而引起的某种控制误差。 It must be noted, the present invention is also applicable to frequency division duplex, allowing some due to different channel matrix between uplink and downlink channels caused control error.

当移动终端20k能够基于常规MMSE加权计算方法来计算加权矢量 When the mobile terminal 20k is able to calculate the weight vector based on conventional MMSE weight calculation 时,本发明也是适用的。 When the present invention is applicable.

对此,考虑接收信号的相关矩阵R,其等于R=XXH/p0这样的公式可以被变换为:R=1p0(PsHWS+Z)(PsHWS+Z)H]]>R=PsHHH+Prp0{HWSZH+(HWSZH)H}+1p0ZZH]]>R=A~A~H+E]]>其中E=1p0Z(I-1p0SHS)ZH]]> In this regard, consider a received signal correlation matrix R, which is equal to R = such a formula XXH / p0 may be transformed into: R = 1p0 (PsHWS + Z) (PsHWS + Z) H]]> R = PsHHH + Prp0 {HWSZH + (HWSZH) H} + 1p0ZZH]]> R = A ~ A ~ H + E]]> where E = 1p0Z (I-1p0SHS) ZH]]>

允许了由于误差矩阵E而引起的加权误差,可以用R来代替前面所述公式中的 Allows the weighted error caused due to an error matrix E can be replaced by R in the aforementioned formula . 因此, therefore, 于是由下式给出:v~k={R-1a~k}*||{R-1a~k}*||]]>因为R通常是非奇异并且可逆的,所以在上面的等式中使用关系R+=R-1。 So is given by: v ~ k = {R-1a ~ k} * || {R-1a ~ k} * ||]]> R because generally nonsingular and reversible, in the above equation using the relationship R + = R-1.

对应于常规最小均方差(MMSE)加权计算方法。 Weight calculation method corresponds to the conventional Minimum Mean Square Error (MMSE).

另外,因为迫零(ZF)加权计算方法具有与MMSE加权计算接近的解决方案,所以移动终端20k能够基于常规ZF计算方法来计算加权矢量 Further, since the zero-forcing (ZF) weight computation method has close to the calculated MMSE weighting solutions, the mobile terminal 20k is able to calculate the weight vector computing method based on conventional ZF 当然,本发明不仅适用于移动通信系统或者多点对点系统,而且适用于无线局域网或者点对点无线通信系统。 Of course, the present invention is applicable not only to mobile communication systems or multi-point systems, but also to a wireless LAN or an ad hoc wireless communications system.

自然地,可以在不脱离本发明范围的情况下对上述的本发明实施例进行许多修改。 Naturally, many modifications in the embodiments without departing from the scope of the present invention, the above-described present invention.

Claims (18)

1.用于控制通过无线网络(15)由第一通信装置(20)到第二通信装置的信号的传输的方法,第二通信装置(10)具有至少N个天线,其中N等于或大于2,第一通信装置具有至少Mk个天线,其中Mk等于或大于2,其特征在于,该方法包括由第二通信装置执行的以下步骤:-确定(S801)加权矢量vk,其中k是表示第一通信装置的标记,该加权矢量由Mk个元素组成,该加权矢量的每个元素被期望加权由第一通信装置通过第一通信装置的天线所传输的信号,-确定(S804)与所确定的加权矢量vk有关的信息,-通过无线网络将至少一个信号传输(S806)到第一通信装置,所述信号包括与所确定的加权矢量vk有关的信息或者由与所确定的加权矢量vk有关的信息进行加权。 1 for controlling wireless network (15) to the first communication means (20) a method for transmitting signals of the second communication device, the second communication device (10) having at least N antennas where N is equal to or greater than 2 first communication device having at least Mk antennas where Mk is equal or greater than 2, characterized in that the method comprises the steps executed by the second communication apparatus of: - determining (S801) a weighting vector VK, where k is the first tag communication device, the weighting vector of Mk elements, each element of the weighting vector is weighted by the desired signal transmitted by the first communication device through the antenna of the first communication device, - determining (S804) determines that the information relating to the weighting vector vk, - at least one wireless network signal transmission (S806) to the first communication means, said signal comprising information related to the weighting vector vk determined by the weighting vector vk or the determined relevant weighting information.
2.根据权利要求1所述的方法,其特征在于,与所确定的加权矢量vk有关的信息是至少第二加权矢量wk,其中k是表示第一通信装置(20)的标记,第二加权矢量wk由N个元素组成,第二加权矢量wk的每个元素加权通过第二通信装置(10)的天线传输到第一通信装置的信号,并且该信号是导频信号。 2. The method according to claim 1, characterized in that the information of the determined weighting vector vk is at least about a second weighting vector wk, where k is a flag indicating a first communication means (20), the second weighting wk vector of N elements, each element of the second weighting vector wk weighting the signals transmitted to the first communication device via the second communication antenna means (10), and the signal is a pilot signal.
3.根据权利要求2所述的方法,其特征在于,第二加权矢量wk等于wk=b*/‖b‖,其中b=PrHTvk,]]>Pr是由第一通信装置传输到第二通信装置的信号的功率,以及HT是信道响应矩阵H的转置。 3. The method according to claim 2, characterized in that the second weighting vector wk is equal to wk = b * / ‖b‖, where b = PrHTvk,]]> Pr is transmitted by the first communication device to the second communication power of the signal apparatus, and HT is the channel response matrix H transposition.
4.根据权利要求2所述的方法,其特征在于,第二通信装置通过无线网络传输多个导频信号,所述导频信号由被定义为相互正交的多个第二加权矢量wk进行加权,和/或由不同的第二加权矢量wk加权的导频信号是相互正交的。 4. The method according to claim 2, characterized in that the second communication device transmitting a plurality of pilot signals over the wireless network pilot, the pilot signal is defined as a plurality of second weighting vectors wk are mutually orthogonal by the weighting, and / or weighted by different second weighting vectors wk are pilot signals orthogonal to each other.
5.根据权利要求4所述的方法,其特征在于,K个第一通信装置被链接到第二通信装置,其中K等于或大于2,导频信号相互正交并且由不同的第二加权矢量w1到wK进行加权,以及对于k=1到K,第二加权矢量wk等于wk=]]>(B*BT)-1bk*/||bk||,]]>其中B=[b1/‖b1‖,...,bK/‖bK‖]不是奇异矩阵,bk=PrHkTvk,]]>Pr是由k个第一通信装置传输到第二通信装置的信号的功率,HTk是与k个第一通信装置有关的信道响应矩阵的转置。 The method according to claim 4, characterized in that, a first communication device K is linked to the second communication device, wherein K is equal to or greater than 2, the pilot signal orthogonal to each other and by a different second weighting vectors weights w1 to wK and for k = 1 to K, the second weighting vector wk is equal to wk =]]> (B * BT) -1bk * / || bk ||,]]> where B = [b1 / || b1‖, ..., bK / ‖bK‖] is not a singular matrix, bk = PrHkTvk,]]> Pr is a k-th first communication device to transmit power of signals second communication device, HTk is a k-th It means a communication channel response related to the transpose of a matrix.
6.根据权利要求1到5中任何一项所述的方法,其特征在于,由所确定的加权矢量wk进行加权的信号被包含在指令时隙(602)中。 6. The method of 1 to 5 according to any one of the preceding claims, characterized in that the signals weighted by the determined weighting vector wk is included in the instruction time slot (602) in.
7.根据权利要求6的方法,其特征在于,指令时隙进一步包括第一通信标识符和/或将由第一通信装置使用的调制和编码方案。 7. A method according to claim 6, characterized in that the instruction time slot further comprises the first communication identifier and / or modulation and coding scheme used by the first communication device.
8.用于通过无线网络(15)从第一通信装置(20)传输信号到第二通信装置(10)的方法,第二通信装置具有至少N个天线,其中N等于或大于2,第一通信装置具有至少Mk个天线,其中Mk等于或大于2,其特征在于,该方法包括由第一通信装置执行的以下步骤:-通过Mk个天线从第二通信装置接收(S900)至少一个信号,-从所述至少一个接收信号来确定(S903)由Mk个元素所组成的加权矢量 8. A method for the second communication device (10), the second communication device having at least N antenna transmission signals of the first communication means (20) from the wireless network (15), where N is equal to or greater than 2, the first communication device having at least Mk antennas where Mk is equal or greater than 2, characterized in that the method comprises the steps executed by the first communication device: - Mk antennas by the second communication device receives (S900) from the at least one signal, - receiving a signal from the at least one determined (S903) by a weighting vector Mk elements consisting of -由所确定的加权矢量 - by the determined weighting vector 的元素来加权(S904)通过第一通信装置的每个天线传输到第二通信装置的信号。 Weighting elements (S904) a signal transmitted to the second communication device through each antenna of the first communication device.
9.根据权利要求8所述的方法,其特征在于,通过Mk个天线从第二通信设备接收的信号是导频信号。 9. The method according to claim 8, wherein the second communication device received from the antenna through the Mk signals are pilot signals.
10.根据权利要求9所述的方法,其特征在于,加权矢量 10. The method according to claim 9, wherein the weight vector 等于v~k=]]>{(HHH)+a}*||{(HHH)+a}*||,]]>其中+是穆尔-彭罗斯广义矩阵求逆,α是由第一通信装置接收到的矢量,H是信道响应矩阵,HH是信道响应矩阵H的复共轭转置。 Equal to v ~ k =]]> {(HHH) + a} * || {(HHH) + a} * ||,]]> where + is the Moore - Penrose generalized matrix inverse, α is a first communication means for receiving the vector, H is the channel response matrix, HH is the complex channel response matrix H is a conjugate transpose.
11.根据权利要求10所述的方法,其特征在于,多个信号被接收并且表示p0个符号的序列,以及从与加权矢量有关的信息来确定加权矢量 11. The method according to claim 10, wherein the plurality of signals is received and a sequence of p0 symbols and determining information relating to the weight vector from the weight vector 被分解成下列步骤:-计算第一矩阵A~=1P0XSH,]]>X=[x(1),...,x(P0)],x(p)=[x1(p),...,xMK(p)]T是第p个符号的接收信号,S=s1(1).........s1(p0)...............sN(1).........sN(p0),]]>-计算第二矩阵a~k=1p0XskH,]]>其中sk=[sk(1),...,sk(p0)],-计算加权矢量v~k={(A~A~H)+a~k}*||{A~A~H)+a~k}||,]]>其中+是穆尔-彭罗斯广义矩阵求逆, It is broken down into the following steps: - calculating a first matrix A ~ = 1P0XSH,]]> X = [x (1), ..., x (P0)], x (p) = [x1 (p), .. ., xMK (p)] T is the received signal of the p-th symbol, S = s1 (1) ......... s1 (p0) .............. .sN (1) ......... sN (p0),]]> - calculate a second matrix a ~ k = 1p0XskH,]]> where sk = [sk (1), ..., sk (p0)], - calculating a weighting vector v ~ k = {(A ~ A ~ H) + a ~ k} * || {A ~ A ~ H) + a ~ k} ||,]]> is where + Moore - Penrose generalized matrix inversion, 是矩阵 It is a matrix 的复共轭转置。 The complex conjugate transpose.
12.根据权利要求9到11所述的方法,其特征在于,所传输的加权信号是通过Mk个天线从第二通信装置接收的导频符号,并且所传输的加权信号被包含在识别时隙(611)中。 12. The method according to claim 9 to 11 claim, wherein the weighted signal is transmitted pilot symbols received from the second communication apparatus through the Mk antennas and the weighted signal is included in the transmitted time slot identification (611) in.
13.根据权利要求12所述的方法,其特征在于,识别时隙进一步包括第一通信装置标识符。 13. The method according to claim 12, wherein the slot further comprises identifying a first communication device identifier.
14.用于控制通过无线网络(15)由第一通信装置(20)到第二通信装置(10)的信号的传输的装置(100),第二通信装置具有至少N个天线,其中N等于或大于2,第一通信装置具有至少Mk个天线,其中Mk等于或大于2,其特征在于,用于控制传输的该装置被包含在第二通信装置中并且包括:-用于确定加权矢量vk的装置,其中k是表示第一通信装置的标记,该加权矢量vk由Mk个元素组成,该加权矢量vk的每个元素被期望加权由第一通信装置通过第一通信装置的天线所传输的信号,-用于确定与所确定的加权矢量vk有关的信息的装置,-用于通过无线网络将至少一个信号传输到第一通信装置的装置,所述信号包括与所确定的加权矢量vk有关的信息或者由与所确定的加权矢量vk有关的信息进行修改。 14. A method for controlling wireless network (15) means (100) transmission signals of the second communication device (10) by the first communication means (20) to the second communication device having at least N antennas where N is equal to or greater than 2, the first communication device having at least Mk antennas where Mk is equal or greater than 2, wherein the means for controlling the transmission is contained in the second communication device and comprises: - means for determining a weighting vector vk means, where k is a flag indicating the first communication device, the weighting vector vk of Mk elements, each element of the weighting vector vk being expected weighted transmitted by the first communication device through an antenna of the first communication device signal, - means for weighting vector vk and the information related to the determined determination, - means to the first communication device to the at least one signal transmitted over the wireless network, said signal comprises a weighting vector vk determined by the relevant information or the modified information from the determined weighting vector vk related.
15.用于通过无线网络(15)由第一通信装置(20)传输信号到第二通信装置(10)的装置(200),第二通信装置具有至少N个天线,其中N等于或大于2,第一通信装置具有至少Mk个天线,其中Mk等于或大于2,其特征在于,用于传输信号的该装置被包含在第一通信装置中并且包括:-用于通过Mk个天线从第二通信装置接收至少一个信号的装置,-用于从所述至少一个接收信号来确定由Mk个元素所组成的加权矢量 15. A method for the apparatus (200) a second communication means (10), the second communication device having at least N antennas by the transmission signal by the first communication means (20) wireless network (15), where N is equal to or greater than 2 first communication device having at least Mk antennas where Mk is equal or greater than 2, characterized in that the means for transmitting a signal contained in the first communication device and comprises: - a second through the Mk antennas from communication means for receiving at least one signal means, - means for determining from the at least one received signal by the weight vector composed of Mk elements 的装置,-用于由所确定的加权矢量 , - means for weighting vector is determined by the 的元素来加权通过第一通信装置的每个天线传输到第二通信装置的信号的装置。 The second communication device a signal is transmitted to the weighting element through each antenna of the first communication device.
16.用于控制通过无线网络由第一通信装置到第二通信装置的信号的传输的信号,第二通信装置具有至少N个天线,其中N等于或大于2,第一通信装置具有至少Mk个天线,其中Mk等于或大于2,其特征在于,用于控制信号的传输的该信号由第二通信装置传输并且包括导频符号,所述导频符号由从加权矢量vk获得的加权矢量wk进行加权,其中k是表示第一通信装置的标记,该加权矢量vk由Mk个元素组成,该加权矢量vk的每个元素被期望加权由第一通信装置通过第一通信装置的天线传输的信号。 16. A signal transmission control signal to the second communication device, the second communication device having at least N antennas by the first communication device over the wireless network, where N is equal to or greater than 2, the first communication device having at least one Mk antenna, where Mk is equal or greater than 2, wherein, for the signal transmission of the control signal transmitted by the second communication device and comprises pilot symbols, the pilot symbols weighted by a weighting vector obtained from the vector vk wk weighting, where k is a flag indicating the first communication device, the weighting vector vk of Mk elements, each element of the weighting vector vk being expected signal weighted by a first antenna transmitting a first communication device through the communication means.
17.可以被直接装载到可编程装置中的计算机程序,包括指令或者代码部分,用于当所述计算机程序在可编程装置上被执行时执行根据权利要求1到7所述的方法的步骤。 17 may be a computer program directly loadable into a programmable device, comprising instructions or portions of code for performing steps of a method according to claim 7 when said computer program is executed on a programmable device.
18.可以被直接装载到可编程装置中的计算机程序,包括指令或者代码部分,用于当所述计算机程序在可编程装置上被执行时执行根据权利要求8到13所述的方法的步骤。 18 may be a computer program directly loadable into a programmable device, comprising instructions or portions of code for performing the method steps of claim 8 to claim 13 when said computer program is executed on a programmable device.
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